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Professional 16-inch Newton Astrograph with 4-lens corrector f/3.7
For Sale

Price -
$16,900.00

Ad Number: 166222

Posted: 24 Mar 2019

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For sale new telescope 400/1478. It is made by high-level optician and mechanic in a workshop of Crimean astronomical observatory in 2017. I'm asking $17,90016,900.

The optical system: Newton of direct focus with the four-lens coated MgF2 corrector calculated by Terebizh.

Design: a rigid steel central part to which fasten on steel expansion pipes knot of the main mirror (MM) on the one hand and knot of the lens of the corrector, on the other hand. The frame of MM has 6 fans which are carrying out fast alignment of temperature of MM with air prior to observations.Specifications:Main mirror: 400 mmFocal length: 1478 mmRelative aperture: 1:3.7Angular field of vision: 2 degreesLinear field of vision: 52 mm (circle), on a square matrix of 36х36 mm (diagonal of 52 mm)Quality of the image: when using any of the existing matrixes - it is ideal (in one-two pixels), the rated size of stars - 4 microns on all fieldDistance from the last lens of the corrector to a matrix (chip): 54 mmMaterial of the main mirror: astrositallExternal dimensions: 1505х512х512 mmTelescope mass: 74 kgDimensions of a shipping box: 1560x565x560 mmMass of a shipping box: 35 kgAutomatic cover: as drives of an automatic cover Firgelli Linear Miniature Actuator PQ12-100-12-P (4 pieces) are used.http://www.mediafire...ская_крышка.MOVhttp://www.mediafire...ская-крышка.gifhttps://mega.nz/#!Cc...Lcvv2jYV2xciTSkhttps://mega.nz/#!6E...5SbODFlGlRnGy88Digital focuser of DF-160:Outer diameter: 160 mmThickness on an optical axis: 47 mmConnecting opening under CCD the camera: mm Ø74.4Connecting carving to the telescope: M100x1Free aperture: from the telescope of 90 mm, from the camera of 74.4 mmFocusing step: 10+0.5 mmFocusing shift on one step of the engine: 33 nanometers / stepSpeed of rotation of the engine: 303 steps/sec. or 6.3 turns/sec.Focusing speed: 10 microns/sec.The engine step with a reducer: 25BYHJ30-01Engine step: 7.5 ⁰PC interface: USB (from the control unit)Fastening of the camera to a focuser is calculated on the standard interface of the FLI Ø74.4 cameras of mmNew, there was no first light yet.Telescope is located in Ukraine. The shipment from Ukraine will be discussed.Payment: to my account in Bank of America or to ukrainian Visa or MasterCard.Cost does not include shipping and payment fee.I am happy to answer your questions.